rare : Idioms & Phrases
rare bird
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noun a rare or unique person
rara avis.
WordNet
rare earth
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noun any element of the lanthanide series (atomic numbers 57 through 71)
lanthanon; lanthanide; lanthanoid; rare earth.
WordNet
rare-earth element
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noun any element of the lanthanide series (atomic numbers 57 through 71)
lanthanon; lanthanide; lanthanoid; rare earth.
WordNet
rare-roasted
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adjective satellite (meat) roasted with the meat inside still rare